How to set DuckDuckGo as your search engine in Google Chrome
Oh hey look:
It seems you can now choose DuckDuckGo as your default search engine. First became aware of this option via a Techcrunch piece from today.
Enter chrome://settings/ in your address bar, scroll down to Search engine and select DuckDuckGo from the Search engine used in address bar drop-down. If you don't see this, update your browser to the latest version (73.0.3683.75) and then try again.